/* funcoes diversas
 ******************************************************************************/
$ = function(id) {
  return document.getElementById(id);
}

function getElementsByClassName(strTagName, strClassName){
	var arrElements = (document.all)? document.all : document.getElementsByTagName(strTagName);
	var arrReturnElements = new Array();
	strClassName = strClassName.replace(/-/g, "\-");
	var oRegExp = new RegExp("(^|\s)" + strClassName + "(\s|$)");
	var oElement;
	for(var i=0; i<arrElements.length; i++){
		oElement = arrElements[i];
		if(oRegExp.test(oElement.className)){
			arrReturnElements.push(oElement);
		}
	}
	return (arrReturnElements)
}

Array.prototype.remove = function(el) {
  for (var i=0; i<this.length; i++) if (this[i] == el) this.splice(i,1);
}

//Quebra uma array em pedacos: chunk([1,2,3,4,5,6,7],3) == [[1,2,3],[4,5,6],[7]]
chunk = function(a, s) {
  for(var x, i = 0, c = -1, l = a.length, n = []; i < l; i++)
    (x = i % s) ? n[c][x] = a[i] : n[++c] = [a[i]];
  return n;
};

//Embaralha os elementos de um vetor
shuffle = function(v) {
  for(var j, x, i = v.length; i; j = parseInt(Math.random() * i), x = v[--i], v[i] = v[j], v[j] = x);
  return v;
};

//Posicao X e Y de um objeto
findPos = function(obj) {
  var curleft = curtop = 0;
  if (obj.offsetParent) {
    curleft = obj.offsetLeft
    curtop = obj.offsetTop
    while (obj = obj.offsetParent) {
      curleft += obj.offsetLeft
      curtop += obj.offsetTop
    }
  }
  return [curleft,curtop];
};

//Remove caracteres indesejaveis a esquerda, direita ou ambos: s.trim()
String.prototype.trim = function(c, t) {
    return c = "[" + (c == undefined ? " " : c.replace(/([\^\]\\-])/g, "\\\$1")) + "]+",
    this.replace(new RegExp((t != 2 ? "^" : "") + c + (t != 1 ? "|" + c + "$" : ""), "g"), "");
};

//Quebra as linhas que ultrapassam determinada quantidade de caracteres: s.wordWrap(10,"\n",true)
String.prototype.wordWrap = function(m, b, c) {
    var i, j, l, s, r = this.split("\n");
    if(m > 0) for(i = -1, l = r.length; ++i < l;){
        for(s = r[i], r[i] = ""; s.length > m;
            j = c ? m : (j = s.substr(0, m).match(/\S*$/)).input.length - j[0].length
            || j.input.length + (j = s.substr(m).match(/^\S*/)).input.length + j[0].length,
            r[i] += s.substr(0, j) + ((s = s.substr(j)).length ? b : "")
        );
        r[i] += s;
    }
    return r.join("\n");
};

//Codigo fonetico de uma palavra, util para procurar palavras com sons semelhantes (lingua inglesa)
String.prototype.soundex = function(p) {
    var i, j, l, r, p = isNaN(p) ? 4 : p > 10 ? 10 : p < 4 ? 4 : p,
    m = {BFPV: 1, CGJKQSXZ: 2, DT: 3, L: 4, MN: 5, R: 6},
    r = (s = this.toUpperCase().replace(/[^A-Z]/g, "").split("")).splice(0, 1);
    for(i = -1, l = s.length; ++i < l;)
        for(j in m)
            if(j.indexOf(s[i]) + 1 && r[r.length-1] != m[j] && r.push(m[j]))
                break;
    return r.length > p && (r.length = p), r.join("") + (new Array(p - r.length + 1)).join("0");
};

//Verifica se o numero do CNPJ e valido
String.prototype.isCNPJ = function(){
    var b = [6,5,4,3,2,9,8,7,6,5,4,3,2], c = this;
    if((c = c.replace(/[^\d]/g,"").split("")).length != 14) return false;
    for(var i = 0, n = 0; i < 12; n += c[i] * b[++i]);
    if(c[12] != (((n %= 11) < 2) ? 0 : 11 - n)) return false;
    for(var i = 0, n = 0; i <= 12; n += c[i] * b[i++]);
    if(c[13] != (((n %= 11) < 2) ? 0 : 11 - n)) return false;
    return true;
};

//Verifica se o numero do CPF e valido
String.prototype.isCPF = function(){
    var c = this;
    if((c = c.replace(/[^\d]/g,"").split("")).length != 11) return false;
    if(new RegExp("^" + c[0] + "{11}$").test(c.join(""))) return false;
    for(var s = 10, n = 0, i = 0; s >= 2; n += c[i++] * s--);
    if(c[9] != (((n %= 11) < 2) ? 0 : 11 - n)) return false;
    for(var s = 11, n = 0, i = 0; s >= 2; n += c[i++] * s--);
    if(c[10] != (((n %= 11) < 2) ? 0 : 11 - n)) return false;
    return true;
};

//Manipulador de Eventos: addEvent e removeEvent cross-browser
addEvent = function(o, e, f, s){
    var r = o[r = "_" + (e = "on" + e)] = o[r] || (o[e] ? [[o[e], o]] : []), a, c, d;
    r[r.length] = [f, s || o], o[e] = function(e){
        try{
            (e = e || event).preventDefault || (e.preventDefault = function(){e.returnValue = false;});
            e.stopPropagation || (e.stopPropagation = function(){e.cancelBubble = true;});
            e.target || (e.target = e.srcElement || null);
            e.key = (e.which + 1 || e.keyCode + 1) - 1 || 0;
        }catch(f){}
        for(d = 1, f = r.length; f; r[--f] && (a = r[f][0], o = r[f][1], a.call ? c = a.call(o, e) : (o._ = a, c = o._(e), o._ = null), d &= c !== false));
        return e = null, !!d;
    }
};
removeEvent = function(o, e, f, s){
    for(var i = (e = o["_on" + e] || []).length; i;)
        if(e[--i] && e[i][0] == f && (s || o) == e[i][1])
            return delete e[i];
    return false;
};

//Objeto para gerenciar cookies: Cookie.write("TEST","1234567890"); Cookie.remove("TEST");
Cookie = {
    isSupported: function(){
        var s = "{3F2504E0-4F89-11D3-9A0C-0305E82C3301}";
        return "cookie" in document && this.write(s, "OK") && this.read(s) == "OK" && this.remove(s);
    },
    exists: function(name){
        return document.cookie.indexOf(name + "=") + 1;
    },
    write: function(name, value, expires, path, domain, secure) {
        expires instanceof Date ? expires = expires.toGMTString()
        : typeof(expires) == 'number' && (expires = (new Date(+(new Date) + expires * 1e3)).toGMTString());
        var r = [name + "=" + escape(value)], s, i;
        for(i in s = {expires: expires, path: path, domain: domain})
            s[i] && r.push(i + "=" + s[i]);
        return secure && r.push("secure"), document.cookie = r.join(";"), true;
    },
    read: function(name){
        var c = document.cookie, s = this.exists(name), e;
        return s ? unescape(c.substring(s += name.length, (c.indexOf(";", s) + 1 || c.length + 1) - 1)) : "";
    },
    remove: function(name, path, domain){
        return this.exists(name) && this.write(name, "", new Date(0), path, domain);
    }
};